Boolean Exact and Self produce artifacts and wrong operation order with operand that has intersecting elements #81999
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Reference: blender/blender#81999
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System Information
Intel Core 2 Quad, 8 Gb RAM, NVidia GeForce GTX 960 2GB
Windows 7 x64
Blender Version
Broken: 2.91, 2.92
Worked: earlier version of 2.91
Short description of error
Opening a new report: Boolean Exact and Exact Self fails to properly handle operands that have intersecting geometry. This problem was introduced recently because earlier versions of 2.91 worked fine, I can't pinpoint when that happened but perhaps this problem was introduced with an Operand Type option.
Exact steps for others to reproduce the error
BooleanExactSelf_Artifacts_WrongOrder.blend
Added subscriber: @SpectreFirst
Added subscribers: @howardt, @mano-wii
I can confirm that the result was different in a build from 2020-09-15
But even in it, I would not say that the result is correct.
And I'm not sure if the result with self is wrong. It is the same in both modes (Exact and Fast).
Changed status from 'Needs Triage' to: 'Confirmed'
Yes, I confirm that the Exact Self answer is not what it should be, and I will now work on fixing it.
The Exact (without Self) is kind of in "all bets are off" territory, so the fact that it gives a bad answer is not a bug.
This issue was referenced by
1c653a0315
Changed status from 'Confirmed' to: 'Resolved'
I fixed this. Thanks for the nice simple example! Made debugging a lot easier than it might have been.
This issue was referenced by
05129bc821